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Gtt Stock Turbo At 13-14psi All Day

noise

By noise,
in Engines & Forced Induction

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noise Mentor

noise

Posted
Posted (edited)

Who is running the stock GTT turbo at this sort of boost?

How long have you been running it?

I got my GTT tuned recently and they tuned it with this boost. I figure I can always drop it down a bit but it might mess around with my tune?

I would probably just leave it up at what it is, if its reasonably safe.

Edited by noise
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Sydneykid Grand Master

Sydneykid

Posted
Posted (edited)

I deliberately tried one at 12 psi, lasted 4 laps (1 warm up and 3 fast) at Oran.

Ben's lasted 5 laps at Wakefield at 12 psi.

I warned a guy running 12 psi that it would happen to him.

He reckoned it wouldn't 'cause he never drives on the circuit

His got his ceramic in the cat disease driving hard up the hill from the Mooney Mooney bridge on the F3.

Cost him a new turbo and a bottle of JD (he lost the bet :rolleyes: ).

tick....tick......tick

:P cheers :(

Edited by Sydneykid
AlexCim Grand Master

AlexCim

Posted
Posted (edited)

Uh, this might sound like a really odd question.

But if you blew your exhaust turbine wheel pretty bad, so that it wouldnt spin the compressor any more. Then effectivly, the car will always be in VAC, will the ECU still be able to run the car correctly at say 5000 when it would normally be in +ve pressure?

I can get it at 5000 in vac, just doing down a hill in second. But... i dont know if thats the same?

Essentially, if turbo breaks, can the car still run/be driven normally?

ALSO, does the cat get damaged much when blade peices go into it?

Edited by AlexCim
Sydneykid Grand Master

Sydneykid

Posted
Posted
Uh, this might sound like a really odd question.

But if you blew your exhaust turbine wheel pretty bad, so that it wouldnt spin the compressor any more. Then effectivly, the car will always be in VAC, will the ECU still be able to run the car correctly at say 5000 when it would normally be in +ve pressure?

I can get it at 5000 in vac, just doing down a hill in second. But... i dont know if thats the same?

Essentially, if turbo breaks, can the car still run/be driven normally?

ALSO, does the cat get damaged much when blade peices go into it?

In the examples above, all 3 guys drove their car home without a problem.

:rolleyes: cheers :P

Bass Junky Grand Master

Bass Junky

Posted
Posted

Yeah, my compressor wheel still spins with the air going through it, but it's rubbing on the housing, and it squeels like a banshee!

Still drives though. Just doesn't do it in any sort of hurry!

benl1981 Grand Master

benl1981

Posted
Posted

Is the R34 turbo weaker than the R33? I was going to get my dyno tune (on my 33) done at 12psi so atleast the tune would be good up to there..then back it off to 10psi for most use. Maybe I'll go back to 10psi then too be safe as maybe on the dyno at 12psi the turbo will blow up :rolleyes:

noise Mentor

noise

Posted
  • Author
Posted

Thanks for all the replies guys.

The reason I ask is because a friend of mine ran a stock r33 turbo for 6 months on about 15psi with no problems at all.

And I have spoken to a few people around the place who run them on about 13-14 daily with no problems.

But you certainly cant ignore the broken turbos in this thread.

If my car is tuned for 14 will it run badly if i drop it down to 10 with my avcr? I might run it on 10 for daily and pop it back up on weekends... haha

Bass Junky Grand Master

Bass Junky

Posted
Posted

there's another factor to consider.

14 psi on a stock computer ain't as much as a problem as 14 psi on a PFC running timing and 12.0 AFR.

Lots of timing and lean ratios, = HOT gas.

The ceramic turbine gets too hot which makes it delaminate from the shaft.

Hence, cooler exhaust gas, less chance of blowing turbo.

Bass Junky Grand Master

Bass Junky

Posted
Posted

Not likely I wouldn't think on a single turbo.

When you blow the wheel off, the are normally at WOT and by the time the thing blows and the you realise, the thing is already embedded in your cat!!

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